How is the swashplate moved in the UH-60S control system?

How is the swashplate moved in the UH-60S control system?

• A. By primary servos acting through linkages after the mixing unit
• B. Direct mechanical link from cyclic grip
• C. Swashplate movement is negligible
• D. Tail rotor drives swashplate

Answer: (A)

The swashplate is moved by hydraulic primary servos that receive commands from the mixing unit. The pilot’s cyclic and collective inputs are processed by the mixing unit, which translates them into blade-pitch commands for each rotor blade. Those commands drive the servo actuators, which push or pull linkages to tilt and position the swashplate as the rotor turns. The tail rotor has nothing to do with swashplate movement; its role is anti-torque, not blade pitch control.

The swashplate is moved by hydraulic primary servos that receive commands from the mixing unit. The pilot’s cyclic and collective inputs are processed by the mixing unit, which translates them into blade-pitch commands for each rotor blade. Those commands drive the servo actuators, which push or pull linkages to tilt and position the swashplate as the rotor turns. The tail rotor has nothing to do with swashplate movement; its role is anti-torque, not blade pitch control.